Wool comes from sheep and cows.5：Wool comes from sheep and cows. （）

A、it was snowing hard B、hard it was snowing C、how it was snowing hard D、how hard it was snowing

A . 802.11B B . spanning-tree C . 802.1Q D . ISL E . VTP F . Q.921

A . acquires B . anticipates C . recalls D . recko

Although 80% of the world's seafood comes from marine harvests, there is a major shift under way toward aquaculture now. Nearly 40% of salmon marketed today are raised in captivity, compared with 6% a decade ago. Forty percent of all clams, oysters, and mussels are produced in farm environments, along with 65% of freshwater fish. Between 1990 and 1996, fish-farming production rose from 12.4 million to 23 million tons worldwide, writes Anne Platt McGinn in an article for World Watch magazine. "The fact that world seafood supplies continue to increase at all is due almost entirely to the phenomenal growth in aquaculture," says McGinn, a research associate at the World Watch Institute. Commercial aquaculture is driven by rising human population at a time when over harvested wild fish stocks are in decline and conventional farm production has leveled off. Biotechnology is contributing to high-yield aquaculture through transgenics—the transfer of genes from one species to another. Researchers introduce desirable genetic traits into fish, creating hardier stocks. For example, some species of fish have a protein that allows them to live in Arctic waters. By transplanting this "anti-freeze" gene into other species, researchers have created more fish that can survive in extremely cold water, according to Ag-West Biotech, Inc., in Saskatchewan, Canada. Biotechnologists are attempting to improve a wide range of genetic traits in fish used for aquaculture, developing fish that are larger and faster-growing, more efficient in converting feed into muscle, more tolerant of low oxygen levels in water, and better able to resist disease. Researchers also are seeking plant-based sources of food as a more efficient alternative to fishmeal. The use of plant protein on fish farms could take some of the pressure off wild fish stocks and address the problem of phosphorous pollution because plants do not contain high phosphorus levels. Wheat, canola, and canola oil are being used as alternative feed for aquaculture, according to Ag-West Biotech, Inc. While aquaculture produces a reliable source of protein, the industry is rife with environmental problems, asserts McGinn. Perhaps the biggest concern is water pollution: Fish waste and uneaten food accumulates at farm sites and can float directly downstream into water supplies. Farm-related nutrient wastes as well as nitrogen and phosphorus also promote the spread of algal "blooms" that deplete oxygen and kill marine life. Aquaculture is also an inefficient user of resources, McGinn charges. Fish farms need protein feed, andabout 17% of ocean fish, an over harvested wild resource, becomes food for captive-bred fish. "An estimated five kilograms of oceanic fish reduced into fishmeal are required to raise one kilogram of farmed ocean fish or shrimp, representing a large net protein loss," says McGinn. Fish fanning does not have to be an inefficient or polluting industry. McCdnn predicts that many consumers will choose sustainably produced fish in the future, just as they prefer dolphin-free tuna today. All the following statements are the reasons why commercial aquaculture is pushed forward EXCEPT A．the human population is increasing fast. B．the wild fish stocks are decreasing due to over fishing. C．the cost of developing aquaculture is comparatively low. D．there is no improvement in conventional farm production.

A．perpetual B．perplexed C．preserved D．perished

A.nose B.teeth C.glottis D.mouth

A. Cesar Ritz was a stylish person B. Ritz hotel was frequented by people of fashion C. Cesar Ritz cared much about details in creating stylish hotels，and that made his name closely connected with fashion D. Cesar Ritz always led the latest fashion of his day

此题为判断题(对，错)。

A．spread beyond the lakes B．annihilate thousands of horses C．lead to the virtual end of the tourist industry D．destroy the flocks of sheep completely

A．Y B．N C．NG

A．sheer B．utter C．pure D．thorough

His wife Jane, an Oxford graduate in modern languages, has a demanding full-time job. She is director of the Cambridge House literacy scheme for adults in South London. Her working week involves several evenings and Saturdays, and at these times her husband is in sole charge of home and family. Apart from this, they share household jobs and employ a child-minder for the afternoons. This enables him to teach two days a week and to do what he considers is his principal work: writing. He has written several books and spends much of his time in the British Museum Reading Room, cycling there from his home in Brixton. People ask the Maces if they think that their children miss them. One can argue that satisfied parents generally have satisfied children, but in any case the Maces are careful to reserve time and energy to play with their children. "And they have now developed relationships with other adults and children." Previously, Rodney Mace worked full - time and Jane only part-time. Then 18 months ago, the director of the literacy scheme left. "It seemed to me that Jane was very' well suited to do this job. She was very doubtful about it. But I urged her to apply. She did, and she got it." Jane Mace confirms that she needed this encouragement, as so many women initially do. Did his male ego suffer from the changeover？ Nothing like that occurred. But he still seems amazed at the way it changed his thinking. "I felt that we were finally going to be partners. I felt enormous relief. I wasn't avoiding responsibility, but changing it. Our relationship is so much better now. It has been a change for the good for both of us——I think for all of us, in every aspect of our lives. I cannot overemphasize that in every aspect. I think it is fundamental that the woman works. The idea of equal partnership is an illusion if one partner doesn’t work." The article is about a couple whose married life is happier because _______. A．they have a truly equal partnership B．the husband enjoys staying at home C．they earn more money D．the wife has a full-time job

It can be inferred from the statement that the Swedish social welfare system, which pro vides life-long care of its citizens, is no longer feasible and satisfactory. A．正确 B．错误

A．《荀子·劝学》 Xun Zi's Persuasion of Learning B．《老子》 Tao Te Ching C．《韩非子》 Han Feizi D．《孟子》 The Mencius